Bearing for combined loads



Feb. 2, 1932. MEDVED 1,843,292

BEARING FOR COMBINED LOADS Original Filed April 2. 1927 2 SheetsSheet lFeb. 2, 1932. N. MEDVED BEARING FOR COMBINEb LOADS Original Filed April2. 192 2 Sheets-Sheet 2 gmmm M Medved Patented Feb. 2, 1932 UNITED,sriATEs PATENT OFFICE moiioms mnnvrm, or can'ron, 01110 BEARING FORCOMBINED LOADS Original application filed April 2, 1927, Serial No.180,447. Divided and this application filed August 25,

\ 1927. Serial No. 215,369. a

inventionrelates to anti-friction bearings adapted for resistingrelatively great combined radial, thrust and impact loads,

. such as must be resisted in bearings for use for railroad car axlesand the like, and this application is a division of my application forpatent for anti-friction bearings, Serial No. 180,447, filed April 2,1927.

For railroad service it is particularly desirable that the bearing partshe adjustable and consequently may be made in wider limits of tolerancethan in anti-friction bearings of usual types.

Moreover in railroad service the thrust set up in the hearing by thewheels and axle is frequently of very great magnitude, which it isdangerous to attempt to take up by only Figure-1 is an axial sectionalview as on.

line 11, Fig. 2, of my improved combined r radial, thrust, and impacthearing as for a railroad car axle bearing;

Fig. 2, an end elevation thereof with distant parts removed, and partsof the disk bein broken away and portions of the bearing being brokenaway and illustrated in transverse section as on line 22, Fig. 1; and

Fig. 3, a fragmentary view similar to Fig.

1 illustrating a modified form of the bearing Similar numerals refer tosimilar parts 5 throughout the several views.

,The embodiment of the improved antifriction bearing indicated generallyat 210 in.

Figs. 1 and 2 includes an inner tubular raceway sleeve 211 having aplurality of longitudinally spaced annular V raceways 212 therein, andeach raceway is preferably propreferred embodiment of the improvevidedat its bottom apex with a peripheral oil groove 214.

The bearing 210 also includes a plurality of outer raceway rings 221each having an inner annular V raceway 222 therein, and each ring 221preferably includes a raceway collar 223 having a preferably centrallylocated peripheral oil groove 224 on its inner surface, and at one sidethereof an inwardly extending flange 225 having one beveled face 226 forforming one side of the V raceway; and extending from the other side ofthe oil groove 224 opposite the flange 225, the collar 223 is internallythreaded; and for screwing therein a raceway ring-screw 227 is providedand has a beveled face'228 for forming the other side of the annular Vraceway 222, each ring-screw 227 thereby being adapted for varying thedistance between the sides of each annular V raceway.

The bearing 210, thus including the inner raceway sleeve 211 having aplurality of outer annular V raceways 212, and a plurality of outeradjustable raceway rings 221 each having an inner annular V raceway 222,is provided with a plurality of sets of circumferentially spaced doublecone roller members 241 for rolling in the several V grooves of theseveral raceways, and the roller -members 241 each includes integralbase abuttin cones 242 and 243 preferably having a re atively shortcylindric sect1on 244 between the base abutting cones, and beingpreferably provided with guide trunnions 245 extending outwardly fromthe spaced apexes of'the cones, and the trunnions 245 being provided attheir outer ends with flange heads 246.

For oircumferentially spacing each set of the double roller cone members241 from each other in the raceways, each setmay be provided with a pairof ring spacers 250, each of which has a plurality of outer spacednotches'251 cut in the outer peripheral edge 253 thereof, and thenotches are adapted to receive the trunnions 245 of the roller members,and the flange heads 246 of the trunnions serve to prevent lateraldisplacement of the ring spacers.

In order to provide for a locking of each bearing blocks and crossmembers 285 and to receive a suitable locking key 272.

. 271 may be provided in the outer peripheralface of each collar 223 forregistering with the flange notches 270, a pair of the registeringflange and collar notches bein adapted For use in railway service, thesleeve 211 of the bearing 210 is fitted upon a journal 280 of a railwaycar axle 281 carrying in a usual manner a wheel 282 adjacent the jour'nal 280, and there being a journal anda wheel at the other end of theaxle, not shown,

An upper bearing block 282 is provided for resting upon the upper halfof the outer surfaces of the collars 223, and a lower hearing block 283is adapted to fit about the-lower half of the surfaces of the collars223, and suitable vertical b0lts'284 passing through suitable aperturesin the upper and lower 286 of the car truck, are adapted for clampingthe bearing blocks about the bearing 210.

The key 272 is preferably secured to the lower bearing block 283,providing an easy means of adjusting the several ring-screws 227 byunloosening the nuts 287 of the bolts 284, dropping the bearing block283 so that the key 272 carried thereby is below the notches, andadjusting the same to line up and register with each other after whichthe nuts 287 may be tightened and the bearing blocks clamped about thebearing collars, the key 272 fitting into the several registered notchesfor locking the outer collars and ringscrews in the desired position ofadjustment.

cured to the journal 280 as by means of a plurality of cap screws 289screwed through the cover plate 288 and into the end of the journal 280.

An easily made and adjusted bearing for the journal 280 of the railwayaxle 281 is thus provided which is adapted to distribute any radial,impact and thrust loads which it may receive between the several sets ofroller members 241.

As illustrated for the bearing 210 the angles between the sides of theinner and of the outer raceways are each slightly less than the anglebetween elements of the abutting double cone roller members 241; wherebyprovision is made for linearcontact at the outer ends of each cone ofeach roller member with the outer zones of the raceway sides; andwhereby, between the linear contacts, tapered spaces areprovided betweenthe surfaces of the roller members and the surfaces of the raceways, andthese spaces are preferably filled with a suitable lubricant, therebyincreasing the. ease of operation of the bearing. 7 I

Morever, the provision of linear contact at the outer ends of the rollermembers, and of the central tapered spaces, and the fact that the outerraceway ring hasa minimum radial thickness at the plane of the oilgrooves, provides resilience for the bearing and the inner surfaces ofthe outer raceways approach and retreat from the outer surfaces of theroller members when the bearing is being subjected to varying loads,thereby successively reducing and increasing the size of the taperedspaces and subjecting the lubricant therein to a varying pressure.

The modified embodiment 510 of the bearing, illustrated in Fig. 3, issubstantially identical with the bearing 210, with the exception thatthe angle between the sides of the inner annular V raceway 522 in theouter annular raceway ring'521, is greater than the angle between theelements of the abutting double cone roller members 541, while the anglebetween the sides of each outer annular V raceway 512 in the innertubular raceway sleeve 511, is slightly-less than the angle betweenelements of the abutting double cone roller members 541; wherebyprovision is made for linear contact at the outer end of each cone ofeach roller member with outer zones of the sides of its raceway 512, andwith inner zones of the sides of its raceway 522, thereby distributingthe wear over the surfaces of the roller members, and providing forresilience in the roller members-themselves.

The roller members 541 each includes integral base abutting cones 542and 543 preferably having an outer annular oil groove 544 between thebase abutting cones, and otherwise being substantially identical withthe roller members 241. j

The provision of the oil groove 544 for each of the roller members 541further insures proper lubrication of the hearing.

I claim:

1. An anti-friction bearing and the like including an inner raceway ringhaving an outer annular raceway formed therein, an outer raceway ringhaving an inner annular raceway formed therein, and roller membersrolling in the raceways, one of the rings including a raceway collarhaving a face forming one side of its raceway, and the collar beingtheaded, and a threaded raceway ring screw adapted for screw connectionwith the threaded collar and having a face forming the other side of itsraceway, a key notch in a peripheral face of the collar and extending inthe direction of the bearing axis, and a similarly extending key notchin a peripheral face of the ring screw, the notch of the collar beingadapted to register with-the notch of the ring screw for receiving'alocking key.

2. An anti-friction bearing and the like including an inner racewaysleeve having an outer annular raceway formed therein, an outer racewayring having an inner annular raceway formed therein, and roller membersrolling in the raceways, and the ring including a raceway collar havinga face forming One side of the inner raceway, and the collar beingthreaded, and a threaded racewayring screw adapted for screw connectionwith the threaded collar and having a face forming the other side of theinner raceway, a key notch in an outer peripheral face of the collar, akey notch in an outer peripheral face of the ring screw, the notch ofthe collar being adapted to register with the notch of the ring screwforrec-eiving a locking key.

3. An anti-friction bearing and the like including a sleeve having aplurality of raceways formed therein, a plurality of rings each having araceway formed therein opposite one of the first mentioned raceways, androller members rolling in the opposed raceways, each of the ringsincluding a raceway collar having a face forming one side of the ringraceway, and the collar being threaded, and

a threaded raceway ring screw adapted for screw connection with thecollar and having a face forming the other side of the ringraceway, akey notch in a peripheral face of the collar and a key notch in aperipheral face of the ring screw, the notches of the several collarsbeing adapted to register with the notches of the several ring screwsand with each other for receiving a common locking key.

l. An anti-friction bearingand the like including a sleeve having aplurality of raceways formed therein, a plurality of rings 1 each havinga raceway formed therein opposite one of the first mentioned raceways,and roller members rolling in the opposed raceways, each of therings'including a raceway collar having a face forming one side of thering raceway and the collar being threaded, and a threaded raceway ringscrew adapted for selective connection with the collar and having a faceforming the other side of the ring raceway, a key notch in a peripheralface of the collar and a key notch in a periph eral face of the ringscrew, the notches of the several collars being adapted to register withthe notches of the several ring screws and witheach other, separablebearing blocks and connecting clamping the several collars, and a key onone of the bearing blocks fitting into the several registered notchesfor locking the collars and ring screws in desired positions ofadjustment.

r 5. An anti-friction bearing and the like including an inner racewayring having an outer annular raceway formed therein, an. outer racewayring having an inner annular raceway formed therein, and roller membersroll- 1 means therefor adapted for ing in the raceways, one of the ringsincluding adjustable screw connected annular members each having a faceforming one side of its raceway, a key notch in a peripheral face of oneof the annular members, and a plural- ,ity of spaced key notches in aperipheral face of the other annular member, the notch of the onegmember being adapted to register with one of the notches of the othermember for receiving a locking key.

6. An anti-friction bearing and the like including a sleeve having aplurality of raceways formed therein, a plurality of rings annularmembers of each adjustable ring, and

a plurality of spaced key notches in a peripheral face of the otherannular member of each adjustable ring, the notch of the one member ofeach of the rings being adapted to register with one of the notches ofthe other memberof each of the rings and with each other for receiving alocking key.

7 An anti-friction bearing and the like including a sleeve havingv aplurality of raceways formed therein, a plurality of rings each having araceway formed therein opposite one of the first mentioned raceways,

and roller members rolling in the opposed raceways, each of the ringsincluding adjustable screw'connected annular members each having a faceforming one side of its raceway, a key notch in a peripheral face of oneof the annular members of each adjustable ring, and a plurality ofspaced key notches in a peripheral face of the other annular member ofeach adjustable ring, the notch of the one member of each of the ringsbeing adapted to register with one of the notches of the other member ofeach of the rings and with each other, separable bearing blocks andconnecting means therefor adapted for clamping some of the ring members,and a key on one of the bearing blocks fitting into the severalregistered notches for locking the adjustable ring members in desiredpositions of adjustment.

In testimony that I claim the above, I have hereunto subscribed my name.

NICHOLAS Mnnvfnn.

